A close-up of Comet 67P/Churyumov-Gerasimenko by NASA's ultraviolet instrument surprised scientists by revealing that electrons close to the comet's surface -- not photons from the Sun as had been believed -- cause the rapid breakup of water and carbon dioxide molecules spewing from the surface.

A new global study finds that, despite lower yields, a target market for whom cost is not really an object makes organic agriculture more profitable for farmers than conventional agriculture.

In the fickle, unpredictable system that is our climate, it looks like El Niño, which was already said to have came and gone with a whimper months ago by climate scientists, may finally be arriving.

When it happens, we may know by bunny breeding.

At times during the past 10,000 years, cottontails and hares surged when the El Niño weather pattern drenched the Pacific Coast with rain, according to an analysis of 3,463 bunny bones. The number of El Niños per century "correlates very strongly with the total rabbit population in Baja California, as well as relative abundance of the moisture-loving species of rabbits," says University of Utah anthropology doctoral student Isaac Hart.

A new study gives insight into the behavioral medications that medical caregivers sometimes prescribe for kids with Down syndrome.

The impact of scary TV on children's wellbeing has been overstated, according to a new paper. While research has shown that a small minority of children can have extreme reactions to a scary program, overall there is very little sign of increased anxiety, fear, sadness or sleep problems. 

An artificial intelligence system has for the first time reverse-engineered the regeneration mechanism of planaria, small worms that can regrow body parts. This is the first model of regeneration discovered by a non-human intelligence and the first comprehensive model of planarian regeneration, which had eluded human scientists for over 100 years.